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