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