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