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