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