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