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