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