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