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