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