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