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