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