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