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