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