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