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