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