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