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