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)(11,16)(12,13)(14,15)(17,18,20,22)(19,23,24,21)(25,26)(27,28)(29,32)(30,31)(2,3)(4,8)(10,15)(13,16)(17,18,20,22)(19,21,24,23)(25,27,31,32)(26,29,30,28)(1,2,5,3)(4,6,8,7)(9,11,14,12)(10,16,15,13)(17,18)(19,21)(20,22)(23,24)(25,28,31,29)(26,32,30,27)(1,3,5,2)(4,6,8,7)(9,12,14,11)(10,16,15,13)(17,18)(19,21)(20,22)(23,24)(25,29,31,28)(26,32,30,27)(1,4)(2,6)(3,7)(5,8)(9,13,14,16)(10,12,15,11)(17,19,20,24)(18,21,22,23)(25,30,31,26)(27,29,32,28)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.