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