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