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