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