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