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