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