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