The visualization of Cayley graphs for many groups is possible using 3
-D models. Most of our examples are Cayley graphs of infinite groups w
here we exploit automatic structures to efficiently produce computer i
mages of the Cayley graphs. The infinite groups are visualized using f
ractal rescaling so that the infinite graph projects into a bounded do
main. Varying the color choice for these fractal representations of th
e Cayley graphs allows the visual recognition of features such as posi
tivity of the total exponent of the words.