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