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