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