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