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