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