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)(17,18,22,27,23,26,21,28)(19,29,32,41,33,24,31,40)(20,34,37,25,36,43,38,44)(30,42,35,45,46,48,47,39)(1,3,7,2)(4,13,16,12)(5,9,6,11)(8,14,10,15)(17,19,23,33)(18,24,26,29)(20,35,36,47)(21,32,22,31)(25,42,44,48)(27,41,28,40)(30,38,46,37)(34,45,43,39)(1,4,7,16)(2,8,3,10)(5,15,6,14)(9,13,11,12)(17,20,23,36)(18,25,26,44)(19,30,33,46)(21,38,22,37)(24,39,29,45)(27,43,28,34)(31,47,32,35)(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.