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