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