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