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