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