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