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