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