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