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