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