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