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