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