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