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)(19,27,30,40)(20,31)(21,34,36,25)(22,26)(23,29)(24,32)(28,42,43,41)(33,39,47,46)(35,38)(37,48)(44,45)(1,3)(2,7)(4,12)(5,14)(6,13)(8,15)(9,11)(10,16)(17,19,22,30)(18,23,26,38)(20,28,32,43)(21,35,36,29)(24,37,31,45)(25,40,34,27)(33,48,47,44)(39,42,46,41)(2,8)(7,15)(9,10)(11,16)(17,20)(18,24)(19,28)(21,33)(22,32)(23,37)(25,39)(26,31)(27,41)(29,44)(30,43)(34,46)(35,48)(36,47)(38,45)(40,42) involution — undirected(1,4,6,5)(2,9,8,10)(3,12,13,14)(7,11,15,16)(20,32)(24,31)(28,43)(33,47)(37,45)(39,46)(41,42)(44,48)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.