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