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)(19,29)(20,34)(21,27)(22,28)(23,26)(24,33)(25,35)(30,44)(31,39)(32,41)(36,40)(37,42)(38,45)(43,47)(46,48)(1,3,4,8)(2,5,6,7)(9,10)(11,15)(12,14)(13,16)(17,19,22,33)(18,24,28,29)(20,30,37,46)(21,32,23,31)(25,38,40,43)(26,41,27,39)(34,48,42,44)(35,47,36,45)(3,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,20,21,36,22,37,23,35)(18,25,26,42,28,40,27,34)(19,30,32,45,33,46,31,47)(24,38,41,44,29,43,39,48)(2,6)(5,7)(11,16)(13,15)(17,21,22,23)(18,26,28,27)(19,31,33,32)(20,35,37,36)(24,39,29,41)(25,34,40,42)(30,45,46,47)(38,44,43,48)(10,14)(13,15)(17,21,22,23)(18,27,28,26)(19,32,33,31)(20,36,37,35)(24,39,29,41)(25,34,40,42)(30,45,46,47)(38,48,43,44)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.