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)(17,18,22,24,21,26,20,25)(19,27,28,31,30,23,29,32)(2,5)(6,8)(17,19,21,30)(18,23,26,27)(20,29,22,28)(24,32,25,31)(1,3,4,7)(2,6,5,8)(9,11,13,10)(12,16,14,15)(18,24)(19,28)(20,22)(23,27)(25,26)(29,30)(2,5)(6,8)(9,12,13,14)(10,15,11,16)(17,20,21,22)(18,25,26,24)(19,29,30,28)(23,31,27,32)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.