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