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