Cayley graph of F2 ✔
Presented below are the graphs (generated using GraphViz) of the various cayley-* branches of my fractals.git Git repository. The .dot files where generated using git-dot.

Step 0: 1 node

Step 1: 5 nodes

Step 2: 17 nodes

Step 3: 53 nodes

Step 4: 161 nodes

Step 5: 485 nodes

Step 6: 1457 nodes