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