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