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