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