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