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