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