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