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