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