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