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