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