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