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