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