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