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