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)(20,25)(21,24)(22,23)(27,32)(28,31)(29,30)(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)(17,18,23,22)(19,24,21,26)(20,25,30,29)(27,31,28,32)(34,39)(36,42)(40,47)(44,46)(3,10)(4,7)(11,16)(12,15)(17,19,23,21)(18,24,22,26)(20,28,30,27)(25,32,29,31)(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)(17,20,23,30)(18,25,22,29)(19,27,21,28)(24,31,26,32)(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)(17,21,23,19)(18,24,22,26)(20,27,30,28)(25,32,29,31)(33,36)(34,35)(37,46)(38,42)(39,41)(40,48)(43,47)(44,45)(1,5)(2,8)(3,11)(4,12)(6,14)(7,15)(9,13)(10,16)(17,22,23,18)(19,26,21,24)(20,29,30,25)(27,32,28,31)(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.