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