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