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