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