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