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