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