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