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