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