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