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