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