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)(35,38)(36,44)(37,40)(39,45)(41,43)(42,47)(46,48)(3,12)(4,14)(8,11)(9,13)(18,19)(20,27)(24,26)(28,32)(33,34,37,40)(35,41,43,38)(36,39,45,44)(42,47,48,46)(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)(33,35,37,43)(34,38,40,41)(36,42,45,48)(39,46,44,47)(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)(33,34)(35,38)(36,39)(37,40)(41,43)(42,46)(44,45)(47,48)(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)(33,36,37,45)(34,39,40,44)(35,42,43,48)(38,46,41,47)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.