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