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