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