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