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