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