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