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