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