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