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