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