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