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