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