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