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