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