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