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)(19,26)(20,23)(21,24)(22,25)(27,30)(28,31)(29,32)(33,34)(35,39)(36,37)(38,41)(40,45)(42,43)(44,47)(46,48)(1,3,7,4)(2,8,6,9)(5,11,13,12)(10,15,14,16)(18,20)(19,24)(25,28)(27,32)(33,35,38,44)(34,39,41,47)(36,42,45,48)(37,43,40,46)(17,19)(18,21)(20,26)(22,27)(23,24)(25,29)(28,30)(31,32)(33,36)(34,40)(35,42)(37,41)(38,45)(39,46)(43,47)(44,48) involution — undirected(1,4,7,3)(2,9,6,8)(5,12,13,11)(10,16,14,15)(17,20,23,18)(19,26,24,21)(22,28,31,25)(27,30,32,29)(33,35)(34,39)(36,42)(37,43)(38,44)(40,46)(41,47)(45,48)(1,5)(2,10)(3,11)(4,12)(6,14)(7,13)(8,15)(9,16)(17,21,23,26)(18,24,20,19)(22,30,31,29)(25,27,28,32)(33,37,38,40)(34,36,41,45)(35,43,44,46)(39,42,47,48)(1,6,7,2)(3,9,4,8)(5,10,13,14)(11,15,12,16)(17,22,23,31)(18,25,20,28)(19,27,24,32)(21,29,26,30)(33,36)(34,37)(35,42)(38,45)(39,43)(40,41)(44,48)(46,47)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.