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