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