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