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