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