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