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