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