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