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