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