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