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