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