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