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