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