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