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