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