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