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