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