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