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)(17,18,21,26)(19,27,30,23)(20,25,22,24)(28,32,29,31)(1,2,5,6)(3,8,4,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,23)(20,29)(21,30)(22,28)(24,31)(25,32)(26,27)(9,11,12,16)(10,13,14,15)(18,24)(20,22)(23,31)(25,26)(27,32)(28,29)(1,3,5,4)(2,7,6,8)(11,16)(13,15)(17,20,21,22)(18,25,26,24)(19,28,30,29)(23,31,27,32)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(17,20,21,22)(18,25,26,24)(19,29,30,28)(23,32,27,31)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.