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