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