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