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)(11,13,15,16)(17,18,19,24,21,23,22,26)(20,28,30,25,29,32,27,31)(1,3,5,4)(2,6,7,8)(9,11)(10,13)(12,15)(14,16)(18,23)(19,22)(27,30)(28,32)(1,4,5,3)(2,6,7,8)(11,15)(13,16)(17,19,21,22)(18,24,23,26)(20,27,29,30)(25,28,31,32)(17,20,21,29)(18,25,23,31)(19,27,22,30)(24,28,26,32)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.