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