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