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)(11,14,15,16)(18,19)(20,24)(26,30)(27,32)(11,15)(14,16)(17,18)(19,21)(20,22)(23,24)(25,26,29,30)(27,28,32,31)(10,13)(14,16)(18,19)(20,24)(27,32)(28,31) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19,21,18)(20,23,24,22)(25,27,29,32)(26,31,30,28)(1,3,4,7)(2,5,6,8)(9,11,12,15)(10,14,13,16)(17,20)(18,22)(19,23)(21,24)(25,28,29,31)(26,32,30,27)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.