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