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