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