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)(17,18,21,23)(19,22,24,20)(25,26)(27,28)(29,30)(31,32)(12,16)(14,15)(17,19,21,24)(18,20,23,22)(25,26)(27,28)(29,30)(31,32)(10,11)(14,15)(19,24)(20,22)(26,30)(27,31) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,11,13,10)(12,15,16,14)(17,19)(18,22)(20,23)(21,24)(25,27,29,31)(26,28,30,32)(1,3,4,7)(2,6,5,8)(9,12)(10,14)(11,15)(13,16)(17,20,21,22)(18,19,23,24)(25,28)(26,31)(27,30)(29,32)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.