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