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