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