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)(19,24)(20,21)(22,23)(25,28)(26,32)(27,29)(30,31)(1,3,5,8)(2,6,7,4)(10,11)(14,15)(18,23)(21,31)(24,25)(27,32)(1,2)(3,4)(5,7)(6,8)(9,11,13,10)(12,15,16,14)(17,19,22,28)(18,24,23,25)(20,29,30,26)(21,27,31,32)(1,4)(2,3)(5,6)(7,8)(9,12)(10,14)(11,15)(13,16)(17,19)(18,25)(20,26)(21,27)(22,28)(23,24)(29,30)(31,32) involution — undirected(1,3)(2,4)(5,8)(6,7)(17,20)(18,21)(19,26)(22,30)(23,31)(24,32)(25,27)(28,29) involution — undirected(1,4)(2,3)(5,6)(7,8)(17,21)(18,20)(19,27)(22,31)(23,30)(24,29)(25,26)(28,32) 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.