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