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