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