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