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