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