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