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