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