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