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