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