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