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