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