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