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