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