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