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