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