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