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