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