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