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