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