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