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