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