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