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