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