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