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