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