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