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)(11,12)(13,14)(15,16)(18,22)(19,25)(24,29)(27,31)(34,35)(36,43)(37,45)(46,47)(3,8)(5,7)(9,11)(10,14)(12,16)(13,15)(18,22)(23,26)(24,29)(30,32)(33,34,38,35)(36,39,43,41)(37,42,45,40)(44,47,48,46)(9,12,15,14)(10,11,16,13)(17,18,21,22)(19,26,25,23)(20,24,28,29)(27,32,31,30)(33,35,38,34)(36,41,43,39)(37,42,45,40)(44,47,48,46)(1,3)(2,5)(4,8)(6,7)(9,13,15,11)(10,12,16,14)(17,19)(18,23)(20,27)(21,25)(22,26)(24,30)(28,31)(29,32)(33,36)(34,39)(35,41)(37,44)(38,43)(40,46)(42,47)(45,48)(1,2)(3,5)(4,6)(7,8)(9,14,15,12)(10,11,16,13)(17,20,21,28)(18,24,22,29)(19,27,25,31)(23,30,26,32)(33,37)(34,40)(35,42)(36,44)(38,45)(39,46)(41,47)(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.