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