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