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