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