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