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