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