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