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