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