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