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)(33,34,38,42)(35,41,45,39)(36,37,46,40)(43,47,48,44)(3,9)(7,13)(10,15)(14,16)(17,19)(18,22)(20,26)(21,27)(23,25)(24,30)(28,31)(29,32)(33,35,38,45)(34,39,42,41)(36,43,46,48)(37,44,40,47)(2,6)(7,13)(8,11)(14,16)(17,19,21,27)(18,23,25,22)(20,26,29,32)(24,31,28,30)(33,36,38,46)(34,40,42,37)(35,43,45,48)(39,47,41,44)(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)(34,37)(35,43)(38,46)(39,44)(40,42)(41,47)(45,48) 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)(34,41)(36,43)(37,47)(38,45)(39,42)(40,44)(46,48)(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)(34,36)(35,44)(38,40)(39,43)(41,48)(42,46)(45,47)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.