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