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