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