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