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