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