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)(17,18,22,27)(19,28,31,24)(20,32,34,44)(21,26,23,38)(25,35,43,36)(29,45,33,48)(30,41,37,40)(39,46,42,47)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(17,19,22,31)(18,24,27,28)(20,33,34,29)(21,37,23,30)(25,42,43,39)(26,41,38,40)(32,45,44,48)(35,46,36,47)(11,12)(14,16)(17,20,22,34)(18,25,27,43)(19,29,31,33)(21,36,23,35)(24,39,28,42)(26,44,38,32)(30,47,37,46)(40,48,41,45)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,14,15,16)(20,34)(25,43)(29,33)(32,44)(35,36)(39,42)(45,48)(46,47)(11,12)(14,16)(17,21,22,23)(18,26,27,38)(19,30,31,37)(20,35,34,36)(24,40,28,41)(25,32,43,44)(29,46,33,47)(39,45,42,48)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.