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