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