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