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