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