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