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