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