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