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