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