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