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