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