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)(11,15)(12,13)(14,16)(17,18)(19,24)(20,22)(21,23)(1,3,5,8)(2,6,7,4)(10,12)(14,15)(17,19,21,20)(18,22,23,24)(25,26,28,30)(27,29,31,32)(2,7)(4,6)(9,11,13,16)(10,14,12,15)(17,18)(19,22)(20,24)(21,23)(25,26)(27,29)(28,30)(31,32)(1,4)(2,3)(5,6)(7,8)(9,11)(10,14)(12,15)(13,16)(17,18)(19,22)(20,24)(21,23)(25,27,28,31)(26,29,30,32)(1,3)(2,4)(5,8)(6,7)(9,12,13,10)(11,14,16,15)(17,20,21,19)(18,22,23,24)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.