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