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