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