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