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