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