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