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