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