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