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