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