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