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