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