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