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