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