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