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