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