\begin{tikzpicture}[x=1cm,y=1cm]
  \coordinate (root0) at (0,.23);
  \coordinate (root1) at (0,-.23);
  \coordinate (u) at (3,1.35);
  \coordinate (w) at (3,-1.35);
  \coordinate (z) at (3.5,0);
  \coordinate (top0) at (6.3,1.58);
  \coordinate (top1) at (6.3,1.12);
  \coordinate (bottom0) at (6.3,-1.12);
  \coordinate (bottom1) at (6.3,-1.58);
  \begin{scope}[on background layer]
    \node[draw=foldgray,densely dotted,rounded corners=4pt,
      fill=foldgray!6,inner sep=9pt,fit=(root0)(root1)] {};
    \node[draw=foldblue!35,rounded corners=4pt,
      fill=foldblue!4,inner sep=8pt,fit=(top0)(top1)] {};
    \node[draw=foldblue!35,rounded corners=4pt,
      fill=foldblue!4,inner sep=8pt,fit=(bottom0)(bottom1)] {};
  \end{scope}
  \foreach \r in {root0,root1}{
    \draw[draw=foldgray!65,densely dotted,line width=.65pt] (\r)--(u);
    \draw[draw=foldgray!65,densely dotted,line width=.65pt] (\r)--(w);
    \node[part B,draw=foldgray!65] at (\r) {};
  }
  \foreach \r in {top0,top1}{
    \draw[fold edge] (u)--(\r);
    \draw[fold edge] (z)--(\r);
    \node[part B] at (\r) {};
    \node[font=\small,anchor=west] at ($(\r)+(.26,0)$) {$j_1$};
  }
  \foreach \r in {bottom0,bottom1}{
    \draw[fold edge] (w)--(\r);
    \draw[fold edge] (z)--(\r);
    \node[part B] at (\r) {};
  }
  \node[font=\small,anchor=west] at (6.56,-1.12) {$j_1$};
  \node[font=\small,anchor=west] at (6.56,-1.58) {$j_2$};
  \foreach \v in {u,w,z}
    \node[part A] at (\v) {};
  \node[font=\small,anchor=east] at (2.84,1.35) {$u\in C$};
  \node[font=\small,anchor=east] at (2.84,-1.35) {$w\in D$};
  \node[font=\small,anchor=south east] at (3.36,.03) {$z$};
  \node[font=\small,text=foldblue] at (3,2.12) {$h_u=(2,0)$};
  \node[font=\small,text=foldblue] at (3,-2.12) {$h_w=(1,1)$};
  \node[diagram label] at (0,.85) {root class};
  \node[font=\small,text=foldgray] at (0,-.85) {deleted};
  \node[diagram label] at (6.3,2.35) {remaining right clones};
  \node[font=\scriptsize,text=foldgray,anchor=north] at (3.5,-.13) {outer};
\end{tikzpicture}