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