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