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