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