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