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