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