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