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