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)(19,20)(21,29)(22,25)(23,27)(24,30)(26,31)(28,32)(33,34,39,37)(35,42,38,40)(36,41,46,44)(43,48,45,47)(1,2)(3,7)(4,11)(5,6)(8,13)(9,14)(10,16)(12,15)(17,19)(18,23)(20,25)(21,26)(22,27)(24,31)(28,29)(30,32)(33,35,39,38)(34,40,37,42)(36,43,46,45)(41,47,44,48)(2,6)(3,9)(8,11)(10,12)(17,18,22,25)(19,23,27,20)(21,29,30,24)(26,28,32,31)(33,34,39,37)(35,40,38,42)(36,44,46,41)(43,48,45,47)(1,3)(2,7)(4,12)(5,9)(6,14)(8,16)(10,13)(11,15)(17,18)(19,23)(20,27)(21,24)(22,25)(26,31)(28,32)(29,30)(33,36,39,46)(34,41,37,44)(35,43,38,45)(40,47,42,48)(1,4,5,13)(2,8,6,11)(3,10,9,12)(7,15,14,16)(17,20,22,23)(18,19,25,27)(21,28,30,31)(24,26,29,32)(33,37,39,34)(35,40,38,42)(36,41,46,44)(43,48,45,47)(1,2)(3,7)(4,8)(5,6)(9,14)(10,15)(11,13)(12,16)(17,21,22,30)(18,24,25,29)(19,26,27,32)(20,28,23,31)(33,38,39,35)(34,40,37,42)(36,45,46,43)(41,47,44,48)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.