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