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