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