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