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