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