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