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