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