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