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