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