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