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