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