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