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