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