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