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