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