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