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