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