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)(18,22)(19,20)(26,29)(27,28)(36,44)(40,45)(42,48)(46,47) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,18,23,22)(19,25,20,24)(21,26,30,29)(27,32,28,31)(34,38)(39,41)(40,45)(46,47)(2,6)(7,13)(8,11)(14,16)(17,19,23,20)(18,24,22,25)(21,28,30,27)(26,32,29,31)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48)(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,20,23,19)(18,25,22,24)(21,28,30,27)(26,32,29,31)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,21)(18,26)(19,27)(20,28)(22,29)(23,30)(24,31)(25,32)(33,35,37,43)(34,39,38,41)(36,42,44,48)(40,46,45,47)(1,4,5,12)(2,8,6,11)(3,10,9,15)(7,14,13,16)(17,22,23,18)(19,25,20,24)(21,29,30,26)(27,32,28,31)(33,36)(34,40)(35,42)(37,44)(38,45)(39,46)(41,47)(43,48)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.