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