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