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