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)(14,16)(17,18)(19,23)(20,25)(21,24)(22,26)(27,30)(28,32)(29,31)(1,3,5,4)(2,6,7,8)(17,19)(18,23)(20,28)(21,27)(22,29)(24,30)(25,32)(26,31)(1,4,5,3)(2,6,7,8)(9,10)(11,16)(12,14)(13,15)(18,24)(19,27)(20,21)(25,26)(28,29)(30,32)(10,14)(13,16)(17,20,22,21)(18,25,26,24)(19,27,29,28)(23,30,31,32)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.