One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(9,10)(11,13)(12,14)(15,16)(17,18)(19,26)(20,22)(21,25)(23,27)(24,29)(28,31)(30,32) involution — undirected(5,6)(7,8)(9,11,12,15)(10,13,14,16)(18,22)(20,29)(23,30)(24,25)(26,31)(28,32)(1,2,3,4)(6,8)(17,19)(18,23)(20,28)(21,27)(22,30)(24,31)(25,26)(29,32)(10,14)(13,16)(19,27)(23,26)(28,32)(30,31) involution — undirectedA 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.