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