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