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