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