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