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