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