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