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