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)(18,23)(20,31)(21,35)(24,36)(26,38)(27,43)(28,29)(33,34)(37,42)(39,44)(40,41)(45,46) involution — undirected(2,6)(7,15)(8,13)(9,16)(17,18,21,23,22,26,35,38)(19,24,28,36,30,41,29,40)(20,32,33,42,34,25,31,37)(27,44,43,48,45,39,46,47)(1,3)(2,7)(4,10)(5,14)(6,15)(8,16)(9,13)(11,12)(17,19)(18,24)(20,27)(21,28)(22,30)(23,36)(25,39)(26,41)(29,35)(31,46)(32,44)(33,43)(34,45)(37,47)(38,40)(42,48) involution — undirected(5,12)(8,13)(9,16)(11,14)(17,20)(18,25)(19,27)(21,33)(22,34)(23,37)(24,39)(26,32)(28,43)(29,46)(30,45)(31,35)(36,47)(38,42)(40,48)(41,44) 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.