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