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