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