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