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