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