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