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