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