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