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