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