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