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