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