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