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