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