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