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