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