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