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