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