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