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)(17,18,22,27)(19,23,30,26)(20,31,34,47)(21,35,36,38)(24,39,41,33)(25,42,43,29)(28,44,32,46)(37,48,40,45)(1,3)(2,7)(4,11)(5,13)(6,12)(8,15)(9,10)(14,16)(17,19,22,30)(18,23,27,26)(20,32,34,28)(21,29,36,42)(24,40,41,37)(25,38,43,35)(31,46,47,44)(33,48,39,45)(1,4,6,5)(2,8,9,14)(3,11,12,13)(7,15,10,16)(17,20,29,45,19,28,36,39,22,34,42,48,30,32,21,33)(18,24,35,46,26,40,43,47,27,41,38,44,23,37,25,31)(3,12)(7,10)(11,13)(15,16)(17,19,22,30)(18,23,27,26)(20,32,34,28)(21,29,36,42)(24,40,41,37)(25,38,43,35)(31,46,47,44)(33,48,39,45)(1,5,6,4)(2,8,9,14)(3,13,12,11)(7,15,10,16)(17,19,22,30)(18,23,27,26)(20,32,34,28)(21,29,36,42)(24,40,41,37)(25,38,43,35)(31,46,47,44)(33,48,39,45)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.