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