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)(17,18,22,26)(19,23,24,20)(21,29,30,25)(27,28,32,31)(34,40)(36,44)(38,42)(43,45)(2,6)(7,9)(8,12)(14,15)(17,19)(18,23)(20,26)(21,27)(22,24)(25,31)(28,29)(30,32)(33,34)(35,38)(36,41)(37,42)(39,40)(43,46)(44,47)(45,48) involution — undirected(2,6)(7,9)(8,12)(14,15)(17,20,22,23)(18,24,26,19)(21,28,30,31)(25,32,29,27)(33,35,39,37)(34,38,40,42)(36,45,44,43)(41,48,47,46)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,20)(18,19)(21,28)(22,23)(24,26)(25,27)(29,32)(30,31)(33,36,39,44)(34,41,40,47)(35,43,37,45)(38,46,42,48)(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,15)(13,16)(17,21,22,30)(18,25,26,29)(19,27,24,32)(20,28,23,31)(33,37,39,35)(34,42,40,38)(36,45,44,43)(41,48,47,46)(1,4,5,13)(2,8,6,12)(3,10,11,16)(7,14,9,15)(17,19)(18,20)(21,27)(22,24)(23,26)(25,28)(29,31)(30,32)(33,38,39,42)(34,35,40,37)(36,46,44,48)(41,43,47,45)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.