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