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