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