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