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