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