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