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