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