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