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