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