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