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