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