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