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