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