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