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