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