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