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)(11,16)(12,13)(14,15)(17,18,20,22)(19,23,24,21)(25,26,30,28)(27,31,29,32)(2,5)(6,8)(10,15)(11,12)(17,18)(19,21)(20,22)(23,24)(25,27,30,29)(26,31,28,32)(3,7)(6,8)(9,11,14,12)(10,16,15,13)(17,18)(19,23)(20,22)(21,24)(25,27,30,29)(26,32,28,31)(1,2)(3,8)(4,5)(6,7)(9,12,14,11)(10,13,15,16)(17,18)(19,23)(20,22)(21,24)(25,28,30,26)(27,31,29,32)(1,3)(2,6)(4,7)(5,8)(9,13)(10,12)(11,15)(14,16)(17,19,20,24)(18,21,22,23)(25,29,30,27)(26,31,28,32)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.