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