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