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)(19,28)(20,25)(21,32)(22,27)(23,30)(24,31)(26,29)(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)(20,21)(22,30)(24,32)(25,26)(27,28)(29,31)(35,44)(36,46)(39,41)(40,45) involution — undirected(2,6)(7,10)(8,12)(14,16)(17,20,22,31)(18,24,27,25)(19,21,30,29)(23,32,28,26)(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)(17,20)(18,25)(19,29)(21,30)(22,31)(23,32)(24,27)(26,28)(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)(17,18)(19,28)(20,25)(21,32)(22,27)(23,30)(24,31)(26,29)(33,35)(34,41)(36,42)(37,45)(38,44)(39,43)(40,48)(46,47) involution — undirected(1,4)(2,8)(3,11)(5,13)(6,12)(7,14)(9,15)(10,16)(17,21,22,29)(18,26,27,32)(19,20,30,31)(23,25,28,24)(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.