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