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