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)(17,18,23,26)(19,28,29,22)(20,31,30,24)(21,27,32,25)(9,11)(10,13)(12,16)(14,15)(17,19,23,29)(18,22,26,28)(20,32,30,21)(24,25,31,27)(2,6)(7,8)(11,16)(13,15)(17,20,21,19,23,30,32,29)(18,24,27,22,26,31,25,28)(1,3,5,4)(2,7,6,8)(10,14)(13,15)(17,21,23,32)(18,25,26,27)(19,20,29,30)(22,31,28,24)(1,4,5,3)(2,8,6,7)(17,22,32,24,23,28,21,31)(18,19,25,20,26,29,27,30)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.