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