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