One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,11)(3,12,4,9)(5,10,6,15)(8,14,16,13)(17,18,22,26)(19,27,28,25)(20,23,21,24)(29,32,30,31)(1,3,7,4)(2,8,11,16)(5,13,6,14)(9,15,12,10)(18,23)(20,21)(24,26)(25,31)(27,32)(29,30)(18,24)(20,21)(23,26)(25,32)(27,31)(29,30) involution — undirected(1,4,7,3)(2,9,11,12)(5,13,6,14)(8,15,16,10)(17,19,22,28)(18,25,26,27)(20,29,21,30)(23,31,24,32)(1,5,7,6)(2,10,11,15)(3,13,4,14)(8,9,16,12)(19,28)(25,27)(29,30)(31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.