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