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