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