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