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