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)(11,15,16,12)(18,21)(19,23)(25,26,29,27)(28,31,32,30)(1,3,5,8)(2,6,7,4)(11,16)(12,15)(17,18)(19,22)(20,21)(23,24)(2,7)(3,8)(9,11)(10,12)(13,16)(14,15)(17,18)(19,24)(20,21)(22,23)(25,27,29,26)(28,31,32,30)(1,4,5,6)(2,8,7,3)(9,12)(10,11)(13,15)(14,16)(25,28)(26,30)(27,31)(29,32)(1,2)(3,6)(4,8)(5,7)(9,10)(11,12)(13,14)(15,16)(17,19,20,23)(18,22,21,24)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.