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