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