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