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