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