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