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