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