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