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