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