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