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