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