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