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