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