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