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