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