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