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