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