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