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