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