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