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