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