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