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