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