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