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