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