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