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