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