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