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