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)(17,18)(19,22)(20,24)(21,25)(23,28)(26,30)(27,31)(29,32)(2,6)(7,8)(9,11,12,15)(10,13,14,16)(17,19,21,28)(18,22,25,23)(20,26,29,27)(24,30,32,31)(1,3,5,4)(2,7,6,8)(10,14)(13,16)(19,26)(20,29)(22,30)(23,31)(24,32)(27,28)(1,3,5,4)(2,7,6,8)(17,19,21,28)(18,23,25,22)(20,26,29,27)(24,31,32,30)(1,4,5,3)(2,8,6,7)(19,26)(20,29)(22,30)(23,31)(24,32)(27,28)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.