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