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