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