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