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