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