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