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