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