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