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