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