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