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