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