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