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)(19,25)(21,29)(23,31)(24,28)(26,32)(27,30)(1,3,4,8)(2,5,6,7)(11,12)(14,15)(17,18,22,20)(19,26,27,23)(21,24,29,28)(25,32,30,31)(3,8)(5,7)(9,11,13,12)(10,14,16,15)(17,19)(18,23)(20,26)(21,30)(22,27)(24,32)(25,29)(28,31)(2,6)(5,7)(17,20,22,18)(19,26,27,23)(21,28,29,24)(25,32,30,31)(9,12,13,11)(10,15,16,14)(18,20)(23,26)(24,28)(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.