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