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