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