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