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