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