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