One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(9,10)(11,14)(12,15)(13,16)(17,18,21,25)(19,27,29,23)(20,31,32,40)(22,35,34,26)(24,36,39,33)(28,43,44,48)(30,38,46,42)(37,45,41,47)(1,2)(3,6)(4,5)(7,8)(11,12)(14,15)(17,19,21,29)(18,23,25,27)(20,28,32,44)(22,30,34,46)(24,37,39,41)(26,38,35,42)(31,48,40,43)(33,45,36,47)(9,11,13,12)(10,14,16,15)(17,20,21,32)(18,24,25,39)(19,28,29,44)(22,36,34,33)(23,37,27,41)(26,40,35,31)(30,47,46,45)(38,43,42,48)(2,5)(6,7)(9,12,13,11)(10,15,16,14)(18,25)(19,29)(24,39)(26,35)(28,44)(30,46)(31,40)(45,47)(1,3,4,8)(2,6,5,7)(10,16)(14,15)(18,25)(19,29)(20,32)(26,35)(30,46)(33,36)(37,41)(43,48)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.