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