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