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