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