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