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