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