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