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