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