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