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