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