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