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