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