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