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