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