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