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