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