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