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