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