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