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