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