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