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