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