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