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