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