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