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