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