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