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