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