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