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