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