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