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