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