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