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)(11,15)(12,14)(13,16)(18,21)(19,23)(25,26,29,30)(27,28,31,32)(2,3)(4,8)(9,10,12,14)(11,15,16,13)(17,18,20,21)(19,24,23,22)(25,26)(27,28)(29,30)(31,32)(4,8)(6,7)(11,16)(13,15)(18,21)(22,24)(26,30)(28,32) involution — undirected(1,3,5,2)(4,6,8,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,22)(20,23)(21,24)(25,27)(26,28)(29,31)(30,32)(1,4)(2,6)(3,7)(5,8)(9,11)(10,13)(12,16)(14,15)(17,18)(19,24)(20,21)(22,23)(25,28)(26,31)(27,30)(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.