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