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