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