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