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