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