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