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