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