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