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