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