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