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