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