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