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