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