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