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