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