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