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)(19,23)(20,21)(22,24)(25,29)(26,27)(28,30)(31,32)(37,45)(42,46)(43,48)(44,47) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,12)(10,14)(11,13)(15,16)(17,19,22,28)(18,23,24,30)(20,26,25,31)(21,27,29,32)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,48)(45,46)(3,9)(7,12)(10,15)(14,16)(18,24)(20,25)(23,30)(26,31)(34,39)(36,40)(42,46)(44,47) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,12)(10,14)(11,13)(15,16)(17,19)(18,23)(20,26)(21,27)(22,28)(24,30)(25,31)(29,32)(33,35,38,41)(34,40,39,36)(37,43,45,48)(42,47,46,44)(1,3,5,9)(2,7,6,12)(4,10,11,15)(8,14,13,16)(17,20,22,25)(18,21,24,29)(19,26,28,31)(23,27,30,32)(33,36,38,40)(34,41,39,35)(37,44,45,47)(42,48,46,43)(1,4,5,11)(2,8,6,13)(3,10,9,15)(7,14,12,16)(17,21)(18,25)(19,27)(20,24)(22,29)(23,31)(26,30)(28,32)(33,37)(34,42)(35,43)(36,44)(38,45)(39,46)(40,47)(41,48)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.