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