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