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)(18,23)(19,27)(21,30)(28,31) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,18)(19,24)(20,30)(21,26)(22,23)(25,27)(28,32)(29,31)(33,34,38,41)(35,36,43,39)(37,40,46,48)(42,44,45,47)(2,6)(7,13)(8,11)(14,16)(17,19,22,27)(18,24,23,25)(20,28,26,31)(21,29,30,32)(33,35)(34,39)(36,41)(37,42)(38,43)(40,47)(44,48)(45,46)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,19)(18,25)(20,31)(21,29)(22,27)(23,24)(26,28)(30,32)(33,36,38,39)(34,35,41,43)(37,44,46,47)(40,42,48,45)(1,3)(2,7)(4,10)(5,9)(6,13)(8,14)(11,16)(12,15)(17,20)(18,21)(19,28)(22,26)(23,30)(24,29)(25,32)(27,31)(33,35)(34,36)(37,45)(38,43)(39,41)(40,47)(42,46)(44,48) involution — undirected(1,4,5,12)(2,8,6,11)(3,10,9,15)(7,14,13,16)(17,21)(18,26)(19,29)(20,23)(22,30)(24,31)(25,28)(27,32)(33,37)(34,40)(35,42)(36,44)(38,46)(39,47)(41,48)(43,45)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.