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)(35,39)(36,43)(37,40)(38,41)(42,46)(44,47)(45,48) involution — undirected(1,3)(2,7)(4,13)(5,8)(6,11)(9,14)(10,15)(12,16)(17,18)(19,26)(20,21)(22,23)(24,29)(25,31)(27,28)(30,32)(33,34,38,41)(35,39,36,43)(37,40,45,48)(42,46,44,47)(2,8)(5,7)(9,12)(14,16)(18,23)(21,25)(24,26)(28,32)(33,35,38,36)(34,39,41,43)(37,44,45,42)(40,47,48,46)(1,3)(2,7)(4,13)(5,8)(6,11)(9,14)(10,15)(12,16)(17,19,22,29)(18,24,23,26)(20,30,31,27)(21,28,25,32)(33,36,38,35)(34,39,41,43)(37,44,45,42)(40,46,48,47)(1,4,6,15)(2,9,8,12)(3,10,11,13)(5,14,7,16)(17,20)(18,25)(19,27)(21,23)(22,31)(24,28)(26,32)(29,30)(33,34)(35,39)(36,43)(37,40)(38,41)(42,46)(44,47)(45,48)(1,5,6,7)(2,3,8,11)(4,14,15,16)(9,10,12,13)(17,21,22,25)(18,20,23,31)(19,28,29,32)(24,30,26,27)(33,37,38,45)(34,40,41,48)(35,42,36,44)(39,46,43,47)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.