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